//
//  add.hpp
//  learnC++
//
//  Created by apple on 2018/5/8.
//  Copyright © 2018年 yunfan.com. All rights reserved.
//

#ifndef add_hpp
#define add_hpp

#include <stdio.h>

//int add(int x, int y);


namespace secondName
{
    
    namespace threeName{
        void dosomthing();
    }
    
    // This doSomething() belongs to namespace Goo
    //只能声明，如果在这里定义的话，导入到其他文件又要定义就会报错
    int doSomething(int x,int y);
    const int g_c = 5;
}

namespace first = secondName::threeName;

#endif /* add_hpp */
